However, the Impossible Burger's "essential ingredient" raised some food safety issues, and Impossible Foods suffered its first setback when the news leaked that the Food and Drug Administration had turned down Impossible Food's request to get into its GRAS ("generally recognized as safe") food category. Though even in health code limbo, the Impossible Burger remained available to eat at places like White Castle, because just by walking into a White Castle you legally waive all rights to your body's well-being.
Fortunately, after offering the FDA more research into leghemoglobin's safety, the agency said they no longer "have questions" regarding the safety of the ingredient, which is about the most tepid of "meh, whatever" responses out there. Not that it matters, of course. As we've talked about before, the FDA is a joke of an institution, notable for lax standards and easily exploitable loopholes. So why is the company shouting this basically meaningless news from the rooftops? Because making Impossible Burgers requires a lot of food engineering -- a combination of words regular folks don't like to hear unless it's referring to someone building a replica of The Louvre out of mashed potatoes. (The biggest hurdle of GM foods is never the Frankensteinian science, it's the Frankensteinian mobs.)